I bought these to compliment my Wolvhammer boots to keep the rain out of the lace area. Good fit and think they will do the trick. I haven't had them out in the rain yet. The only fault with them is they are not snug at the top. There is a strap to snug them up but not enough for me. If I was in snow up to my knees or in the rain I would want to tighten them up for there is no way to do that other than using some velcro straps of my own. That will work for me but something for the company to consider on their next production line.
I would recommend these but with the awareness of the above issue.